Nim 0.17.0 发布了，Nim 是一种专注于性能，可移植性和表现力的系统编程语言。
此版本修复了 0.16.0 版本中最重要的回归，特别是内存管理器和通道错误已经修复。
There are now two different HTTP response types,
bodyaccessor returns a
Due to this change you may need to add another
awaitin your code.
httpclient.requestnow respects the
maxRedirectsoption. Previously redirects were handled only by
The IO routines now raise
EOFErrorfor the “end of file” condition.
EOFErroris a subtype of
IOErrorand so it’s easier to distinguish between “error during read” and “error due to EOF”.
A hash procedure has been added for
hashesmodule. Previously, hash of a
cstringwould be calculated as a hash of the pointer. Now the hash is calculated from the contents of the string, assuming
cstringis a null-terminated string. Equal
cstringvalues produce an equal hash value.
varargsarguments will now receive a node having the
nkArgListnode kind. Previous code expecting the node kind to be
nkBracketmay have to be updated.
memfiles.opennow closes file handles/fds by default. Passing
memfiles.openrecovers the old behavior. The old behavior is only needed to call
mapMemon the resulting
posix.nim: For better C++ interop the field
sa_sigaction*: proc (x: cint, y: var SigInfo, z: pointer) .noconv.was changed to
sa_sigaction*: proc (x: cint, y: ptr SigInfo, z: pointer) .noconv..
The compiler doesn’t infer effects for
.basemethods anymore. This means you need to annotate them with
.gcsafeor similar to clearly declare upfront every implementation needs to fullfill these contracts.
system.getAst templateCall(x, y)now typechecks the
templateCallproperly. You need to patch your code accordingly.
macros.getTypeImplfor an enum will now return an AST that is the same as what is used to define an enum. Previously the AST returned had a repeated
EnumTynode and was missing the initial pragma node (which is currently empty for an enum).
macros.getTypeImplnow correctly returns the implementation for a symbol of type
If the dispatcher parameter’s value used in multi method is
NilErrorexception is raised. The old behavior was that the method would be a
posix.nim: the family of
ntohsprocs now takes unsigned integers instead of signed integers.
In Nim identifiers en-dash (Unicode point U+2013) is not an alias for the underscore anymore. Use underscores instead.
requiresInitpragma is applied to a record type, future versions of Nim will also require you to initialize all the fields of the type during object construction. For now, only a warning will be produced.
The Object construction syntax now performs a number of additional safety checks. When fields within case objects are initialiazed, the compiler will now demand that the respective discriminator field has a matching known compile-time value.
On posix, the results of
execCmdwill return 128 + signal number if the application terminates via signal.
ospaths.getConfigDirnow conforms to the XDG Base Directory specification on non-Windows OSs. It returns the value of the
XDG_CONFIG_DIRenvironment variable if it is set, and returns the default configuration directory, “~/.config/”, otherwise.
Renamed the line info node parameter for
The parsing rules of
foo bar do: baz
Used to be parsed as:
Now it is parsed as:
foo(bar, do: baz)
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